/*
 *  Copyright 2005 Blandware (http://www.blandware.com)
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package com.blandware.atleap.webapp.action.questionnaire.question;

import com.blandware.atleap.common.QuestionnaireModuleConstants;
import com.blandware.atleap.model.questionnaire.Question;
import com.blandware.atleap.model.questionnaire.Questionnaire;
import com.blandware.atleap.service.exception.BeanAlreadyExistsException;
import com.blandware.atleap.service.exception.BeanNotFoundException;
import com.blandware.atleap.service.questionnaire.QuestionnaireManager;
import com.blandware.atleap.webapp.action.core.BaseAction;
import com.blandware.atleap.webapp.form.questionnaire.QuestionForm;
import com.blandware.atleap.webapp.util.core.LocaleUtil;
import com.blandware.atleap.webapp.util.core.WebappConstants;
import com.blandware.atleap.webapp.util.core.WebappUtil;
import com.blandware.atleap.webapp.util.questionnaire.QuestionnaireModuleWebConstants;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

/**
 * <p>Creates new question.</p>
 * <p><a href="CreateQuestionAction.java.html"><i>View source</i></a></p>
 *
 * @author Roman Puchkovskiy <a href="mailto:roman.puchkovskiy@blandware.com">
 *         &lt;roman.puchkovskiy@blandware.com&gt;</a>
 * @version $Revision: 1.4 $ $Date: 2008/04/29 17:51:54 $
 * @struts.action path="/questionnaire/question/create"
 * name="questionForm"
 * scope="request"
 * input="inputForward"
 * validate="true"
 * roles="questionnaire-question-create"
 * @struts.action-forward name="inputForward"
 * path=".questionnaire.question.create"
 * @struts.action-forward name="listQuestions"
 * path="/questionnaire/question/list.do"
 * redirect="true"
 * @struts.action-forward name="unsatisfiable"
 * path="/questionnaire/question/list.do"
 * @struts.action-forward name="listQuestionnaires"
 * path="/questionnaire/questionnaire/list.do"
 * redirect="true"
 * @struts.action-forward name="listQuestions"
 * path="/questionnaire/question/list.do"
 * redirect="true"
 */
public final class CreateQuestionAction extends BaseAction {
	/**
	 * @param mapping  The ActionMapping used to select this instance
	 * @param form     The optional ActionForm bean for this request (if any)
	 * @param request  The HTTP request we are proceeding
	 * @param response The HTTP response we are creating
	 * @return an ActionForward instance describing where and how
	 *         control should be forwarded, or null if response
	 *         has already been completed
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
	                             HttpServletRequest request, HttpServletResponse response) throws Exception {

        QuestionForm questionForm = (QuestionForm) form;
        String localesMode = questionForm.getLocalesMode();

        request.setAttribute("validationRegexes", QuestionnaireModuleWebConstants.VALIDATION_REGEXES);

		if ( isBackPressed(request) ) {
            // First check, may be session has been invalidated and we need to
            // fill content locales again
            if (request.getSession().getAttribute(WebappConstants.CONTENT_LOCALES_COLLECTION_KEY) == null) {
                List contentLocales = LocaleUtil.getInstance(servlet.getServletContext()).getEnabledLocales();
                request.getSession().setAttribute(WebappConstants.CONTENT_LOCALES_COLLECTION_KEY, contentLocales);
            }

            // check 'check all' ckeckbox if needed
            questionForm.setAllCheckedFlagForTitleCheckboxes(request, localesMode);

			return mapping.findForward("inputForward");
		}

		if ( isCancelled(request) ) {
			return mapping.findForward("listQuestions");
		}

		if ( request.getSession().getAttribute(QuestionnaireModuleWebConstants.QUESTION_SUBMITTED_ACTION_KEY) != null ) {
			return mapping.findForward("listQuestions");
		}
		request.getSession().setAttribute(QuestionnaireModuleWebConstants.QUESTION_SUBMITTED_ACTION_KEY, "create");

		Question question = new Question();
		WebappUtil.copyProperties(question, questionForm, request);

        Map titleMap = questionForm.getTitleMap();
        Map titleCheckedBoxes = questionForm.getTitleCheckedBoxes();
        for (Iterator i = titleMap.entrySet().iterator(); i.hasNext();) {
            Map.Entry entry = (Map.Entry) i.next();
            String localeIdentifier = (String) entry.getKey();
            if (titleCheckedBoxes.get(localeIdentifier) == null) {
                // if this locale is not checked, remove title
                titleMap.put(localeIdentifier, "");
            }
        }

		question.setTitle(titleMap);

        Long questionnaireId = Long.valueOf(questionForm.getQuestionnaireId());

		QuestionnaireManager questionnaireManager = (QuestionnaireManager) getBean(QuestionnaireModuleConstants.QUESTIONNAIRE_MANAGER_BEAN);
        Questionnaire questionnaire = questionnaireManager.retrieveQuestionnaire(questionnaireId);

        if (questionnaire == null) {
			ActionMessages errors = new ActionMessages();
			errors.add("ownerNotFound", new ActionMessage("questionnaire.question.errors.ownerNotFound"));
			saveErrors(request, errors);
			return mapping.findForward("listQuestionnaires");
        }
        if (questionnaire.getFixed().booleanValue()) {
			// questionnaire is fixed, it cannot be edited
			ActionMessages errors = new ActionMessages();
			errors.add("questionnaireIsFixed", new ActionMessage("questionnaire.questionnaire.errors.fixed"));
			saveErrors(request, errors);
			return mapping.findForward("listQuestions");
        }

		try {
			questionnaireManager.createQuestion(question, questionnaireId);
		} catch ( BeanAlreadyExistsException e ) {
			// question already exists
            // check 'check all' ckeckbox if needed
            questionForm.setAllCheckedFlagForTitleCheckboxes(request, localesMode);

			ActionMessages errors = new ActionMessages();
			errors.add("questionAlreadyExists", new ActionMessage("questionnaire.question.errors.alreadyExists"));
			saveErrors(request, errors);
			saveToken(request);
			return mapping.getInputForward();
		} catch (BeanNotFoundException e) {
			ActionMessages errors = new ActionMessages();
			errors.add("ownerNotFound", new ActionMessage("questionnaire.question.errors.ownerNotFound"));
			saveErrors(request, errors);
			saveToken(request);
			return mapping.findForward("listQuestionnaires");
        }
		return mapping.findForward("listQuestions");
	}
}
